v8/test/mjsunit/regress/regress-crbug-703610.js

// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Flags: --allow-natives-syntax

function fun() {};
fun.prototype = 42;
new fun();
function f() {
  return fun.prototype;
};
%PrepareFunctionForOptimization(f);
assertEquals(42, f());
assertEquals(42, f());
%OptimizeFunctionOnNextCall(f);
assertEquals(42, f());